Take Switch Point Into Consideration; Take Viscosity Into Consideration - Endress+Hauser Liquiphant FTL64 Operating Instructions Manual

Mounting
12
5.1.2

Take switch point into consideration

The following are typical switch points, depending on the orientation of the point level
switch.
Water +23 °C (+73 °F)
Minimum distance between the fork tip and the tank wall or pipe wall:
10 mm (0.39 in)
A
D
 5 Typical switch points. Unit of measurement mm (in)
A Installation from above
B Installation from below
C Installation from the side
D Switch point
5.1.3

Take viscosity into consideration

Viscosity values
• Low viscosity : < 2 000 mPa⋅s
• High viscosity: > 2 000 to 10 000 mPa⋅s
Low viscosity
Low viscosity, e.g. water: < 2 000 mPa⋅s
It is permitted to position the tuning fork within the installation socket.
 6 Installation example for low-viscosity liquids. Unit of measurement mm (in)
High viscosity
NOTICE
Highly viscous liquids may cause switching delays.
‣
Make sure that the liquid can run off the tuning fork easily.
‣
Deburr the socket surface.
High viscosity, e.g. viscous oils: ≤ 10 000 mPa⋅s
The tuning fork must be located outside the installation socket!
B
D
> 25 (0.98)
Liquiphant FTL64
C
D
Endress+Hauser
A0044069
A0042333